Decoding of choice preparatory signals. a, Neural encoding of DUk in lateralized mu- and beta-band activity (8–32 Hz) at lateral central electrodes, expressed as parameter estimate in z-units, in the focused (top) and divided (bottom) attention conditions. Left, Neural encoding locked to the onset of sample k. Right, Neural encoding locked to response. b, Encoding strength for earliest samples 1–2 (lighter bars) and latest samples 7–8 (darker bars), in the focused (left) and divided (right) attention conditions. Conventions are the same as in Figure 2. c, Neural decoding of response from lateralized choice preparatory signals in the last second preceding response execution. The thick bars under the curves indicate cluster-level significance for the focused (green) and divided (gray) attention conditions, and their difference (black). Shaded error bars indicate SEM.